Portable pneumatic motor.



No. 762,932. PATBNTBD JUNE "21, 19,041"

R. A. NORLING.

PORTABLE PNBUMATIG M IOTQR. APPLICATION FILED SEPT. 21, 1903.

No MODEL. 5 SHEETS-SHEET 1';

no; www.

No. 762,932. PATENTEDJUNE 21, 1904.

- R. A. NORLING.

PORTABLE PNBUMATIO MOTOR. APPLIOATION FILED SEPT. 21, 1903.

No MODEL. v 5 sHsnTs-s1mn'r 2.

No. 762,932. PATBNTEO JUNE 21, 1904,

4"2. A. NORLINO. PORTABLE- PNBUMATIO MOTOR.

APPLIOATI'ON HLBDMKPT. 21, 190s.

NO MODEL. 5 sums-SHEET a.

No. 762,932. PATENTED JUNE 21, 1904.

vB.. A. NORLING.

PORTABLE PNUMATIO MOTOR.

APPLICATION FILED SEPT. 21', 1903.

El 5 SHEETS-SHEET 4.

N0 MODEL.

` No.762 ,932. PATNTBD JUNE 21.1904.A

' f i R. A. NORLING.

BORTABLB PNEUMATIG MOTOR. L ""'rr'LIoATIoH FILED SEPT. 21, 1910,73.

N0 MODEL.

.m n., m 2 s M 2 0. 5 A A I r l 1 9 L y a b .L fw, i 1 N 35 9 'is alface View of the same.

'NITRII STATES resented :rune 21, 1904.

REINHOLD A. NORLING, OF AURORA, ILLINOIS, AssIGNOR To AURORA AUTOMATIC MACHINERY COMPANY, on AURORA, ILLINOIS, A CORPO- RATION OF ILLINOIS.

` PORTABLE PNEUMATIO moros?.

SPECIFICATION forming part of" Letters Patent No. 762,932, dated J une 21, 1904.

' Appi'wm'wufiadsepamber21,1903. stra-int. 173,950. montan.)

.To (all 'mZ/.rmt it may concern.- y

Be it known that I, RRINIIOLD A. NORLING', of Aurora, in the county7 of Kane and State of i 1llinoi's, have invented certain new and useful 5 Improvements in Portable Pneumatic Motors;

and I do hereby declare that thezt'ollowing is a full, c lear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked I oy thereon, which form a part of this specification. This invention relates to improvements in pneumatic drills or mechanisms of that kind 1 embracing a fluid-pressure engine of'portable form applied to operate a, drill orlike tool. I5 My invention includes improvementsV in mechanisms of the kind referred to in several particulars, as will hereinafter appear.

In the accompanying drawings, illustrating my invention, Figure l is a sectional view of zo amachine embodying my invention, taken 3,0 valveaseats, taken online 5 tot' Fig. 4. Fig.

6 is a side View of the operating-stud through which one of the valves is actuated. `,Fig 7 is an l end View kot' the same.

view ot one ofthe valve-actuating arms. Fig. Fig. 1'0 is a side View of one ot' the valve-plugs. Fig. 11 is' an end View thereof. Fig. 12 isasectional view takenv transverselythrough two of the power-cylinders of the machine and through the'valvc-seat associated therewith on line 12 120iA Fig. 2: Fig. 13 is a detailv section taken upon line 13 13 of Fig. 12. Fig. 14 is a section taken on the said line 13 13, showing a changed position of the valve. Fig. I5 is 45 a detail section taken on line 15 15 of Fig.' Fig. 16 is a detail section taken on line 1 of Fig. 12, but showing a changed pos1t1on of the valve. Fig. 17 is a sectional Fig. 8 is a side like Fig. 12,A showing amoditi'ed form of the 5 Y valve-plug and of the exhaust-ports in the main casing. Fig. 21 is a detail section taken 0n the line 21 21 of Fig. 20, but showing the valve-plug turned to the reverse position from that shown in said Fig. 20. Fig. 22 is a de-4 tail section taken upon line 22 22 of Fig. 20.

Fig. 23 is a detail section taken uponline 23 23 of Fig. 20, showing the valve-plug turnedinto the reverse posltlon trom that shown 1n As shown-in said drawings, A indicates the main casing of the' machine, which 1n general form is` oi' sector shape and containsfour,

power-cylinders B B' C l', a crank-chamber D, andan air-supply chamber'E. The main 70 casing A is provided at its side adjacent to the 'crank-shaft chamber D with a handle A', and

a handle is formed on the opposite side of the casing by means of an air-supply pipe Q, which communicates with and supplies air to the 75 chamber E. The cylinders B B C C are ar- Y ranged in pairs, with the two cylinders constituting each pair parallel with each other and the central axes of the cylinders Ofeach pair at right angles to the central axes oi the cylinders of the other pair, theairssupply chamber E being located in the sector-shaped space between thecylinders. The pistons Z1 b' c c' within said lcylinders are connected by con- ,necting-rods b2 b3 c2 c with the cranks of the 85 crank-shaft F, which extends through the crankfchamber D. Said crank-shaft has a bearing f at one endv in the main casing Aat ene end of the crank-'chamber and at its opposite end has a bearing' g, formed in a cap or 90 H is actuated from the crank-shaft F by means ot a pinion F' on the crank-shaft, which intermeshes with a spur-gear H on the said .spindle The pinion E' is shown as formed by gear-teeth cut in the crank-shaft F, and said pinion and lthe gear iiheels of the spur-gear H are located outside ot the main casing A, but within the auxiliary casing G, which latl ter covers said parts as well as the driringde= vices by which the valves for controlling the passage of pressure fluid to and from the cyl` inder are actuated.I said device being located within said casing Gr between the said pinion and spur-gear and the adjacent face of the the valve-plugs I and l.

easing KK A principal feature of my inve tion is einl braced in the construction and arrangement of the valves for controlling the admission of the pressure liuid to and its escape from the power-cylinders B B and C C. Said valves embrace oscillating plugs or cylinders i l', which are adapted to turn in cylindric seats or chambers formed therefor in the niain casing A and are arranged with their central axes or axes of rotation transverse to the cylinders B B' and C C', each ot' the oscillating valve plugs being-arranged to operate' in connection with one pair of the cylinders. Each valveplug and the cylindric seat therefor has two sets of coacting valve ports or passages located vone Set near each end ol' the plug` and seat and opposite the cylinders with which the ports or passages constituting the sets are associated. As shown in the drawings, the valve loperates in connection with the cylinders B B' and the t valve l in connection with the cylinders t@ 'lhe said valve-seats are formed in the casing A between the pairs of cylinders B ll' and (l C' and extend across the outer ends ot' said cylinders, the valves being interposed between the outei' endsotl said cylinders and the airsiipply chamber it, which occupies the central space in the casing A between the said cylinders and from which the air r pressure lluid supplied by the pipe Q passes through the ports or p iges of the said valves to the outer cndsot' said cylinders. 'lhe valve seats or chambers are shown as provided with bushings or c vlindric'tubular linings .l il', which forni the bearing-surfaces for the valveplngs, and are provided .with slots or oprnings which constitute the inlet andoutlet ports and cooperate with the po'rts or passages in 'lhe ports or pas# niiltcd to the valvsphlgs.

sages in both of the valve-plugs l l' are alilie and arc lettered the santer in thc drawings7 thc set oi' ports or passages associated l i" while that associated with cylinders B and C is lettered Z3 i* The sets of ports or passages formed in the casing A and the bushings J and J' are for both valves and bushings also lettered alike in the drawings and embrace ports e c and e c', which open from the air-chamber E to the valve-seats and open into the saine through slots in the bushings J J and ports i 2 and if c3, which extend B C to the valve-seats and likewise termi.- nate in slots in the bushings. The ports vy i and serve to connect the outer ends ot' either one of said passages v' i is brought, bythe turning of the plug, into alinenientwithone of the cylinder-ports c2 or e and with one of the supply-ports a 'or di The passages z' lsin each plug are arranged at an angle toeach one passage into register at its ends with two opposite ports in thix casing, thereby bringing the air-supply chamber E into communication with thc'outerend et' one of the cylinders, the other passage in the plug will be out of register with its associated supply and cylinder ports. i

The exhaust-ports in the valve-plugs are formed by means ot' the longitudinal passages i," l" therein,' which extend inwardly from the outer or upper endsvof said plugs to points opposite the respective cylinders, and transverse passages if i, whichextend from the inner ends ot' said longitudinal passages v" 'f to the side faces ot' the plugs and are adapted for communication with the cylinder-ports fi or f when the valve-plugs are turned to bring said exhaust-ports into register with the said cylinder-ports. constituting each pair ot' cylinders being connected with the opposite cranks ofthe crankshaft F, the valve-ports in each valve-'plug are so arranged that when the pressure fluid is being admit-ted to one c if'linderot' each pair through thil supply-ports f the other cylinwith the open air through exhaust ports or passages f or 1".

The cylindrie valve seats or chambers t'or the valve-plugs l l open at their ends directly through the opposite side l'accs ot the main casing Agbut'at the end ot said casing at which the gears l?" ll' are located and which is covered by theanx-iliary casing the said valve-seats are closed by means ol' cap-plates li li', which have screwtlireadod engagement with the wall of the casing and in which are mounted short rotative valvie-operating spindles lj li", through which motion is trans- -At the opposite or upper ends ol' the main casing the cylindric openings constituting the valve-seats ari` preferably closed by means ot' dislis l( K,

with the cylinders B and (l being lettered f' l which are inserted in the ends of said openfrornthe outer ends of the cylindersB C and extend dianietrically through the valve-plug of the cylinders with the air-chamber E when other, so that when the plug is turned to bring The pistons in the cylinders" IOO IlO

haust-pressure Huid' from ,the engine.

ings over the valve-'plugs and held in said openings by means of screw-tlneaded.rings j/l'said disks K being provided with lapel-f tures 7a2 702,- arranged opposite the longitudinal exhaust-passages v," vf* for the escape ofgcx i al( disks K K are made merely for the purpose of excluding dust from the bearings bf the` valve-plugs and to afford endbearings'fo'r the valve-'plugs` The openings therein are made of proper size to. permit free outward passage '/'HQ, notwithstanding .the oscillatory Vmoveof exhaust'pressure Huid from the passages ment'of the valve-plugs. Said cap-plates L L and disks K K are arranged to bear against ,,the ends of the bushings J and K, which are.

removably held in place by said caps and disks. Packing-rings or gaskets y j are shownas interposed between the ends of the bushings J J L and the cap-plates LLl a'nd '..zdisksKj K, said packing-rings serving to in- I `Aetuating'devices for sure tight joints between the parts at these points. p

thevalve-plugs I I are provided as follows: Upon the crank-shaft between the pinion F and the cranks is located a double eccentric M, Figs, 1 and 4.

The eccentric parts of said double, eccentric are engaged by means of the straps 'mi/m"- of" two eccentric-rods M' M2, one of which reaches to and operates the valve-plug l and the other ot which reaches to and operates the-valveplug I. Rigidly attached-'to the outer ends ofthe actuating-spindles LiLd are crank-arms NN', tothe outer ends of which the eccen- -`ltripcfrods M M.2 are connected vbymeans oi' pivot-studs fn. a, Fig. 5. v

A.loose or flexible connection is provided between each of the actuating-.spindles U L" andi the valve-plugs connected therewith,

-.-,'-Figs. 5 to 11.y These devices are alike in the case of the two valve-plugsjandvareiinade follows: The end of each valve-plug adjacent lto,,itsoperating-spind'le is provided with twopartialk or segmental endwise projecting t; flanges if v1, Figs. l() and 11, between the ends of which are formed radial notches or openings adal'ited for engagement with radial liolding'arms H, extending outwardly 'from .a disk or huh Z' on the inner end of the spindle, Aclearly seen in Figs. (S and 7. Said spindle is held from endwise movement in its bearing in the'cap-plate hycontact of the disk Z with -the inner end of said cap-plate and by the contact of the arm N or N with the outer `face of. ysaid cap-plate. The disk l' is i'ree from contact with .the endol the valve-plug; but the ari'ns Z have close bearing contact with the ends et'said flanges i vf, so that whilethe oscilla-` tory movement transmitted tothe driving spindles is transmitted directly to the valveplug there is no such rigid connection between said .valve-plug and said spindle as to prevent 'the valve-plug from maintaining its position 1n the surrounding seats uninliuenced bythe adjustment of or any inequalities in the inoi'ement ofvsaid driving-spindle.V l\'Ioreover,'the pressure ihiid in the supply-chamber E tends byl its pressure on the vadjacent side faces of the valve-plugs l` and l to press the same lat-` erally toward the cylinder-imrts, anda thus maintain tight joints between the Vabre-plug and thcirrseats. and vit is manifest that the loose connection between the driving-spindles -and the valve-plugs, provided as above described, enables the plugs to be thus pressed against their surrounding seats hythe airhole '/'7A Fig. 5, which connects the air-su .i l f port i with the space between the endl,` of thfeyalve-plug and the cap L or L. Ain und prcs'sure is admitted through said holle the space between? the e'ndv oi" the valve-plug and the cap L or L and serves to press the ln theeiid of the Valve-plug ad- Valve-plug endwlisetoward the exhaust vend ofv the valve-seat, and thus .hold the valve-pliyig in \eontact with the disk K and preventing leakage at that end oi' vthe valveplug. "lhe air-pressure t'lius supplicdlto the spaeeat the inner face of the capLalso serves Ito press the operating-spindle L2 or L"i outwardly and hold the disk l against the cap L or L', theieliy'prevcnting leakagebetiveen the cap and spindle. l l

' In the sectional view Fig. 3, 'which shdws the relation of the two valve-plugswvithj rcspect'to tlc pistons in one position of the .crank-shaft, the right-hand piston hasiiust `started ,on its outward stroke andthe va ved ports associated,therewith are in position/to exhaustthe charge. The correspondinglpis-v ton, or that in thc cylinder at the same side of the casing, 'has just started toward the crank and the valve-ports are in position to admit the ai?. The left-hand piston is just coinpleting its inward sti-'oke and its valve-pints are in position to cut oill the supplyof air and will beimmediatelyin position to exhaust the v,air-from the cylinder. The piston in thel corresponding' or parallel cylinder on the left is Just completing its outward stroke and the valveports belonging thereto are in position to close the exhaust and admit a newv charge.

ln Fig. 17 is shown a modified forni of the' check-nut by which the valve-plug is held in place in the casing at the exhaust end of the valve-plug. ln this instance the said check.- nut lormspart oi' a delector-cap Aadapted to IOO prevent the exhaust from escaping directly outward or at right angles to the wall ot the casing and to deflect the same in directions par-` lIO' is located an endwisc sliding or movahletool-v ejecting pin H, Said piull has ahead at its lower end and a nut at its upper end and is adapted to project at its upper end above the inner or upper end ofthe spindle Il, so that pressure may be brought on its said upper end for the purpose of forcing the pin endwise through the spindle against the inner end of the tool-shank heldtherein for the purpose of looseningl or dishidging the. same.

ln the casing A, in axial aline-ment with the tool-carrying spindle Il, is arranged a t'eedscrew spindle U, prwided with four radial-V The Iditi'erent form of construction in devices for communicating motion from the eccentric-s on the main crank-shaft to the valve-plug l`or thel purpose of giving rcciprocai'ory motion to the same. ln this instance the valve-plug is provided with an actuating-arm J, which isrigidly attached tothe end of the plug and the body of whichis madeot' disk Form, so as to cover or close tluyadjacent end ol the, valve seat or chamber. 'l`he eccentric-rml M' in this instance is not directly connectel with the :nztuating-arm oll the valve-plug, but is pivoted to u rocher-a rm M, which is mounted on a pivot-stud nl, allixed in the wall of the easing, and said rocher-arm has engagement with'the actuating-arm J ot'- the valve-plug by means -ot' a longitudinal slot in the `end of' the rocker-arm, which slot is engaged by a sliding block nf, adapted to slide in said slot longitlulinally oi tlw'rochcr-arm and which is engaged by a wrist-pin j, secured in the en'd of the actuatiiig-arm. lnthis instance the arm J is connected` with the valve-plug l by' crank-shaft in the same manner, as hereinbefore 'set forth, may have. exhaust-passages ad cheapness of construction, yet valves arranged relatively-to the .cylinders and drawings. As illustrated in said figures, I2-

indicates a valve-plug like the valve-plugs I and I', above described, with the exception that the valve-plug l2 has two transverse admission-ports and fr and two exhaust-passages f/" i, which latter have the form of transversc recesses in the side ot' the plug. The ports il and recess jl" for the uppermost cylinder .operate, in connection with a supply-port e, acylinder-portff, andan exhaust-portall opens into a chamber U, formed in the casing, which chamber U extends lengthwise ot' the valvechamber outside ot' the bushing to a point between the cylinders, where it is connected with the inner end of a passage U', which extends longitudinally of the cylinders between the same and the valve-chamber, Fig. 22', and opens through the outer wall ot' the casing at the outer ends of the cylinders. The recess v"", Fig. 21, is widel enough to extend over or embrace both the ports fr and n, so that when lthe valve-plug is turned to the proper position the exhaust. passes from the cylinder through the port if, the recesses 1"and port u to the cylinder U and thence to the outer air .through the passage U'. In the caso of the port i" and recess. i" for the lower cylinder the casing is provided with an exlmust-passageA the port f and recess I" to said exit-port V.j

It will ot' course be understood that in` this case the twosels ofv ports in the plug are so arranged that when the admission-port i is in position to admit pressure to the upper cylinder the recess ff will be in position to per- .lnit the exhaust to pass from the lower cylinder and that when the port 1"" is in position to admit pressure to the lower cylinder 'the recess 1"" ot' the plug will be in position to' permit escape/ot the exhaust from the upper eylimlerthrongh the chamber Uand passage U'.

An important advantage gained by the general arrangement of the valves above dcscribed-to wit, one in which thesupply-chamber for the compressed air or pressure fluid is loca.tmlbe.t\veen the sets of cylinders and the plug-valve whiclroperates in connection with each set extends transversely ofthe cylinders and has a set of ports for cach cylinder arranged opposite the cylinder to which it bclongs--is that the. passages leading from the supplychamber to the valves and from the valves to the cylinders are thereby made very short, being in the case of the passage from' the suppl y-chambeal to the valves merely slots IOO IXO

IIS

p central axes in a plane which is radial with respect to the axis of the crank-shaft, valvesfor said cylinders embracing rotative valve-plugs y i the7 central axes of which are parallel with the axis et' thecrank-shaftand each of which is common to all of the cylinders of one set of cylinders, and operative connections between the crank-shaft vand said valve-plugs for ,aetu'ating the latter.

A portable pneumatic motor comprising a pluralli'tybf sets of power-cylinders arranged at an anglete each other, pistons in said cylinders and a crank-*shaftwith which the said pistons are connected, the cylinders of each set being parallel with each other and having their central axes in a plane which is radial te the axis of the crank-shaft, and rotative valves, embracing valve-plugs, tliie central axes of which are parallel with the axis of the crank-shaft and each of which is common to all of the cylinders of oneset of cylinders, said valve-plugs each having aplurality of sets of valve ports or passages, one set for each cylinder of its associated set of/cylinders, and operative connections between the crank-shaft and the said Valve-plugs/t'o-r gi'ving motion to the latter.

3. A portable pneumatic motor comprising a casing whichois provided with a plurality of sets 'ot' power-cylinders arranged at an angleto each other, a supplwchamher for the pressure Huid, and valve-chambers interposed between said supply-chamberand the said Sets of power-cylinders, the cylinders'otl each set having their central axes parallel with each other and in a. plane which is radial to the axis of the cranlvshat't, rotative plug-valves located in said"valve-chambers. each ot'wh-ich is common to all of the cylinders of one set of cylinders and the central axes of which are.

^ parallel with the axis ot' they crank-shaft, said plug-valves cach having a plurality of sets of valve ports or passages,'one for each cylinder of its associated set ot' cylinders, and operative'zonnections between the crank-shaft 'and the said valve-plugs forgiving motion to shaft and are at an angle to' cach other, said casing'being also provided between the outer ends of the cylinders, with a*'slitDDU-chamber i for the pressure Huid, located between `the outei1 ends ot cylinder and also having, 'between said supply-chamber land the cylinders, Cylind ric valve-chambersthe central axes of which are at right angles tothe axes ofthe cylinders and parallelw'ith the crank-shaft, .k i rotative valve-plugs located vin said chambers,

said valve-plugs each having a plurality of sets of valve ports or passages, one foreach of thel cylinders associated` therewith, and the valve v 1 easmgs having ports or passages leading from.

the said supply-chamber to the said valveg.,

l chambers and connections between the ycran l{' l 'haft and the said valve-plugs for giving mo p,

ion tt the latter.

" A portable pneumatic-motor comprising i a casing which is provided with a plurality of sets of power-cylinders, pistons in said cylin-- ders, and a crank-shaft with which the said Apistons yare connected, the lcylinders of the several sets having their central axes in planes which are radial to the axisof thevcrank-shaft y v y,and are at an angle to each other, rotative waive-.plugs which are commento all ot' the i cylinders of one. set, and the ccntralaxes ot'v 1 fwhich are parallel with the axis of the crank-,`

shaft, said valves each having a plurality o lsets of valve ports or passages one for each cylinder ot' the associated set of cylinders, eccentrics" onthe said crank-shaft, actuatingarms on said valve-plugs, and means connecting said eecentrics with said arms for giving `oscillatory motion to'the valve-plugs.

6.- Aportahle pneumatic motor comprising acasingi provided with a power-cylinder and a pressure-fluid-supply chamber, a ciank-sliaft, a piston in the cylinder connected with the cran k-sh aft, an oscillatory valve-plu g mounted in the casing parallel with the crank-shaft, and a valve-chamber for said plug-valve, the wall ot' which constitutes part of the wall of the said supply-chamber, said chamber being providedwith a port or opening connecting the samewith said supply-chamber, and with another port or opening connecting the same with the' cylinder, andthe valve-plug being provided' with an admission and an exhaustl port, said admission-port being adapted to IIO communicate'with both ot' said ports or open-- a crank-shaft, a power-cylinder, a valve foi' controlling the admission of'pressure-fluid to and its exit from said cylinder, said valve emhraci ng a rotative valve-plug' the axis ofwhich is at right angles to thc central axis ot' the cylinder and parallel with the crank-shaft, an admission-portin saidvalve-plugthrough which pressure [luid is admitted to the outer end of the cylinder and an exhaustport in said plug connected with an exhaust-passage which extends longitudinally through the plug and opens through one cndof the same.

8. A portable pneumatic motor comprising :t plurality of sets of power-@vlinders arranged et an :ingle to each other, pistons in said cylinders, n crank-shaft with which said pistons are connected; the cylinder of each set being parallel with each other and having their eentrnl axes in ay plane which is redini to the exis 4of the crank-shaft, and rotative plug-valves provided with two sets'o parallel cylinders.

arranged at right :ingles to each other, :i crank;- chzunber located nt the ndjneent ends oi the cylinders, a pressnre-iinid-supply chamber lecnted between the cylinders, two valve-ohnmhers whieh extend at right angles to the axes of the said cylinders between the letter and the seid snpply-ehnniher, and rotative vaivepiugs in seid valve-chainiers, seid easing' heving' two parallel wells which extend between 'rennen the two sets of cylinders and forni the end walls of said supply-chamber and the Wells of the valve-chamber being joined et their endsy to seid end walls and the snidvalve-chembers opening at their ends through seid end walls.

` l0. portable pneumatic motor comprising a mein easing provided with twosets of parallel cylinders arranged et en angle yto each other and with a supply-chemher ioceted between the cylinders, e crenli-shnft, pistons in the cylinders connected with the crank-shaft, oseilietory valve-pings mounted in the casing parallel with the crank-shaft between the seid supply-ehnrnhers and the cylinders! nd actin.

sting ineens fer the said vzdveplugs ein bracing eecentries en the crank-shaft, actuating-arms mounted in the easing :1nd connected with the valve-plugs, and operative connections between *l* in tiistiniontT that Ielaim the foregoingas my invention afin; in v signature, in presence of two witnesses, this 9th deyV of September,I

REiNAIOLD A. NORLING. afitnessex C( E. Einlesen, Henn J. n'mENnonF.

ne seid eccentric-s and the said actu-4 'etingernis 

